Add MicroG DroidGuardHelper as target

MicroG uses a different package to handle DroidGuard service (SafetyNet),
but still uses the same com.google.android.gms.unstable process name.
Thanks to the changes in 4e53ebfe, we can target both official GMS
and MicroG SafetyNet services at the same time.

native/jni/magiskhide/hide_utils.cpp

@@ -237,6 +237,7 @@ bool init_list() {
 	rm_list(SAFETYNET_COMPONENT);
 	rm_list(SAFETYNET_PROCESS);
 	init_list(SAFETYNET_PKG, SAFETYNET_PROCESS);
+	init_list(MICROG_SAFETYNET, SAFETYNET_PROCESS);
 
 	update_uid_map();
 	return true;

native/jni/magiskhide/magiskhide.h

@@ -18,6 +18,7 @@
 #define SAFETYNET_COMPONENT  "com.google.android.gms/.droidguard.DroidGuardService"
 #define SAFETYNET_PROCESS    "com.google.android.gms.unstable"
 #define SAFETYNET_PKG        "com.google.android.gms"
+#define MICROG_SAFETYNET     "org.microg.gms.droidguard"
 
 #define WEVENT(s) (((s) & 0xffff0000) >> 16)